ADUM2250ARWZ - Hot-Swappable Dual I2C Isolator | Analog Devices
N.º da peça: ADUM2250ARWZ ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.24 | $4,24 |
| 10 | $3.95 | $39,50 |
| 100 | $3.5 | $350,00 |
| 500 | $3.1 | $1.550,00 |
| 1.000 | $2.8 | $2.800,00 |
ADUM2250ARWZ Visão geral
A digital isolator is a component that provides electrical isolation between two circuits while allowing digital signals to pass across the isolation barrier. In the context of I2C, the ADuM2250 integrates two bidirectional channels, each using a proprietary iCoupler technology that combines high-speed CMOS and monolithic transformer isolation. This approach offers advantages over optocouplers, including higher data rates, lower power consumption, and better reliability. The ADuM2250 is part of the broader family of digital isolators, which are essential in systems requiring galvanic isolation for safety, noise immunity, or ground loop elimination.
Key features of the ADUM2250ARWZ include its hot-swap capability, which allows insertion or removal of the device without disrupting the I2C bus, and its compatibility with both 3.3 V and 5 V logic levels. The device is available in a 16-lead SOIC-W package (0.295" width, 7.50 mm) and is specified for operation over the industrial temperature range of -40°C to +125°C. The ADuM2250 also features a low propagation delay and supports multi-drop configurations, making it ideal for isolated I2C buses in systems with multiple slaves.
Technically, the ADuM2250 uses Analog Devices' iCoupler technology, which employs chip-scale transformers to transmit data across the isolation barrier. This results in a compact, reliable solution with high isolation voltage and low electromagnetic interference. The device includes an internal oscillator and a refresh mechanism to maintain output states during periods of no data activity, ensuring that the I2C bus remains stable. The hot-swap feature is implemented through a power-on reset and a controlled output enable, preventing glitches on the bus during power-up or removal.
Typical applications for the ADUM2250ARWZ include isolated I2C buses in industrial automation, medical equipment, and power management systems. It is particularly useful in applications where ground potential differences exist between subsystems, such as in motor drives, solar inverters, and battery management systems. The device's high CMTI and 5 kV isolation make it suitable for harsh environments with high voltage transients.
When designing with the ADUM2250ARWZ, it is important to ensure proper decoupling of the power supply pins with 0.1 µF capacitors placed close to the device. Additionally, the pull-up resistors on the I2C lines should be selected based on the bus capacitance and the desired data rate, as the device's open-drain outputs require external pull-ups. The hot-swap feature should be considered in the system design to avoid bus contention during power sequencing.
Alternativas drop-in para ADUM2250ARWZ — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ADUM2250ARWZ (mesmo formato e footprint) — diferindo em Operating Temperature Range, Number of Channels, Package, Common-Mode Transient Immunity (CMTI), Supply Voltage Range.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ADUM2250WARWZ
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADUM2250ARWZ-RL
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADUM2251ARWZ
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$3.1 / unidade
Ver ficha técnica →ISO1540DR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ISO1541DR
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
ADUM2250ARWZ Especificações
| Isolation Voltage | 5000 Vrms |
| Number of Channels | 2 (bidirectional) |
| Taxa de dados | 1 Mbps |
| CMTI | 25 kV/µs |
| Tensão de alimentação | 3.0 V to 5.5 V |
| Current Sink Capability | 30 mA |
| Tipo de interface | I2C |
| Encapsulamento | 16-SOIC (0.295", 7.50mm Width) |
| Temperatura de operação | -40°C to +125°C |
| Status RoHS | Compliant |
| Tipo de montagem | Surface Mount |
| Número de pinos | 16 |
| Hot-Swap Capable | Yes |
Configuração de pinos do ADUM2250ARWZ
| Pino 1 | VDD1 — Side 1 supply voltage |
| Pino 2 | GND1 — Side 1 ground |
| Pino 3 | SDA1 — Side 1 data line (open-drain) |
| Pino 4 | SCL1 — Side 1 clock line (open-drain) |
| Pino 5 | GND1 — Side 1 ground |
| Pino 6 | NC — No connect |
| Pino 7 | NC — No connect |
| Pino 8 | NC — No connect |
| Pino 9 | NC — No connect |
| Pino 10 | GND2 — Side 2 ground |
| Pino 11 | SCL2 — Side 2 clock line (open-drain) |
| Pino 12 | SDA2 — Side 2 data line (open-drain) |
| Pino 13 | GND2 — Side 2 ground |
| Pino 14 | VDD2 — Side 2 supply voltage |
| Pino 15 | NC — No connect |
| Pino 16 | NC — No connect |
Aplicações típicas
ADUM2250ARWZ é adequado para 6 aplicaçãos: Industrial Automation, Medical Equipment, Power Management, Telecommunications, Automotive Electronics, IoT and Smart Home.
Industrial Automation
The ADUM2250ARWZ provides 5 kVrms isolation and 25 kV/µs CMTI, making it ideal for isolating I2C buses in industrial motor drives, PLCs, and factory automation systems. Its hot-swap capability allows for safe module replacement without shutting down the entire system. The high CMTI ensures reliable communication in environments with high electromagnetic interference, while the 1 Mbps data rate supports fast sensor and actuator communication.
Recomendado
Medical Equipment
In medical devices such as patient monitors and diagnostic equipment, the ADUM2250ARWZ ensures patient safety by providing 5 kVrms isolation between the user interface and the patient-connected circuitry. Its low power consumption and small footprint make it suitable for portable devices. The device's compliance with I2C standards allows seamless integration with medical sensors and ADCs, while the hot-swap feature enables field servicing without powering down critical systems.
Recomendado
Power Management
The ADUM2250ARWZ is used in battery management systems (BMS) and solar inverters to isolate the I2C bus between the microcontroller and battery monitoring ICs. Its 5 kVrms isolation protects low-voltage control circuitry from high-voltage transients. The device's 30 mA current sink capability allows it to drive multiple I2C devices, and its wide supply range (3.0V to 5.5V) accommodates various logic levels. The hot-swap feature is beneficial for modular battery packs that may be connected or disconnected while the system is running.
Recomendado
Telecommunications
In telecom infrastructure, the ADUM2250ARWZ isolates I2C buses between line cards and control modules, preventing ground loops and protecting against lightning surges. Its high CMTI (25 kV/µs) ensures reliable operation in environments with high voltage transients. The device supports data rates up to 1 Mbps, which is sufficient for managing SFP modules and other I2C-controlled components. The hot-swap capability allows for line card replacement without disrupting service.
Recomendado
Automotive Electronics
The ADUM2250ARWZ is suitable for automotive applications such as battery management and infotainment systems, where isolation is required to protect sensitive electronics from high-voltage transients. The automotive-grade variant ADUM2250WARWZ is AEC-Q100 qualified, ensuring reliability in harsh environments. The device's wide temperature range (-40°C to +125°C) and high CMTI make it ideal for under-the-hood applications. Its hot-swap capability is useful for modular battery packs.
Recomendado
IoT and Smart Home
In IoT devices and smart home hubs, the ADUM2250ARWZ isolates I2C buses between the main processor and sensor modules, improving noise immunity and safety. Its low power consumption is suitable for battery-powered devices. The device's small 16-SOIC package saves board space, and its compatibility with 3.3V logic allows direct interfacing with common microcontrollers. The hot-swap feature enables easy sensor replacement in modular IoT systems.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ADUM2250ARWZ — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ADUM2250WARWZ | ADUM2250ARWZ-RL | ISO1540DR |
|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | 5000 Vrms | 2500 Vrms |
| Data Rate | 1 Mbps | 1 Mbps | 1 Mbps | 1 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs |
| Supply Voltage | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V |
| Current Sink Capability | 30 mA | 30 mA | 30 mA | 30 mA |
| Hot-Swap Capable | Yes | Yes | Yes | No |
Principais diferenciais
- Higher isolation voltage (5 kVrms) compared to ISO1540DR (vs ISO1540DR)
- Hot-swap capability not available on ISO1540DR (vs ISO1540DR)
- Automotive-grade variant available (vs ADUM2250ARWZ-RL)
Notas de projeto
Place 0.1 µF decoupling capacitors close to VDD1 and VDD2 pins to ensure stable operation. Use a 10 µF capacitor in parallel for bulk decoupling. The PCB layout should minimize trace length between the isolator and I2C devices to reduce parasitic capacitance and maintain signal integrity.
Ensure that the pull-up resistors on the I2C lines are sized correctly for the bus capacitance and data rate. The ADUM2250ARWZ has open-drain outputs, so external pull-ups are required. For 1 Mbps operation, use pull-up resistors in the range of 1 kΩ to 2 kΩ. Also, avoid exceeding the maximum sink current of 30 mA.
The ADUM2250ARWZ dissipates minimal power, but in high-temperature environments, ensure adequate airflow or thermal relief. The device is rated for -40°C to +125°C, so verify that the junction temperature stays within limits under worst-case conditions. For high data rates and multiple I2C devices, consider the power dissipation from the pull-up resistors.
Informações de conformidade
RoHS compliant per Analog Devices product page. Automotive grade variant ADUM2250WARWZ is AEC-Q100 qualified.